Electric furnace.



G. A. WEEKS.

ELECTRIC FURNACE. I APPLICATION FILED SEPT. s, 1908.

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ELECTRIC FURNACE.

APPLICATION FILED SEPT. 3, 1908 949,511. Patented Feb. 15, 1910.

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C. A. WEEKS.

ELECTRIC FURNACE.

APPLICATION FILED SEPT. 3, 1908.

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CHARLES A. WEEKS, OF PHILADELPHIA, PENNSYLVANIA.

ELECTRIC FURNACE.

Specification of Letters Patent.

Patented Feb. 15, 1910.

Application filed September 3, 1908. Serial No. 451,479.

To all whom it may concern:

Be it known that I, CnAnLEs A. \Vnnns,-a citizen of the United States and a resident of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Electric Furnaces, of which the following is a specification. 1

The principal object of the present invention is to provide a single or multiple electric arc furnace for smelting or refining purposes which shall, in, addition to the known advantages of electric furnaces, possess the additional advantage of uniformly wearing its lining and at the same time applying substantially all of its heat to its;

low body having affixed at or near its end contents.

In describing the invention reference will be made to the accompanying drawings, illustrating one but not the only embodiment thereof, and in those drawings Figure 1, is an end view with parts broken away of a furnace embodying features of the invention. Fig. 2,. is a central vertical :1 horizontal sectional view of the same.

In the drawings 1, is a furnace body provided with an inclosed furnace chamber 2, having a ring-like hearth 3, which is revoluble about its center on. a horizontal axis.

so that the hearth may revolve. The furnace body as shown is of generally barrelform and it is revolubly supported on rollers t, that may be ,l'TlOtlDl'ctl in spring beau; 3 mgs 5.

to turn the furnace gearing 10 and a driving wheel 11, or by a pulley 11. to which power can be applied.

friction wheels mounted upon a by means of 5 gearing 8 a worm andwormwheel S) and 3 the latter is driven manually by beveled through beveled gears 18 and shafts 20 so that the electrodes may be adjusted toward and away from each other. The trunnions constitute water jackets around the electrodes and if desired they afford convenient means for arrangement of an ofl'take.

21, is an offtake shown as connected with the condensing chamber and 23 are passages or openings that may be used. if desired, for charging the furnace.

24:, is a tap or discharge hole that may be provided through the curved wall of the furnace. In using it the hand-wheel 11 may be availed of.

\Vhat I claim is 1. An electric furnace comprising a h0lportions inturned walls or heads to provide a retaining hearth, means for revolubly supporting the body and inturned walls or heads about a substantially horizontal axis, electrodes arranged through said inturned walls or heads, provisions for sealing the body at the ends thereof, and means for revolving said body to interchange the roof and hearth, substantially as described.

2. An electric furnace comprising a hollow l'uri'iace body provided with a lining constituting the retaining walls of an annular retaining hearth, means for revolubly supportii'ig the annular retaining hearth about a horizontal axis, means for revolving said body to interchange the roof and hearth, and electrodes axially arranged in respect to the annular hearth and disposed Two pairs of electrodes 12. are shown. and 2 this arangement is useful in connection with alternating currents. butthe number of the electrodes is not material and may be increased or diminished.

There is a frame work 13, which carries what may be called trunnions 14, around which the furnace body rotates and a packing as 15. 'may be provided around these trunnions so as to inclose the furnace chamber.

16, are holders for the electrodes and the are shown as fitted with racks which mesh with spur wheels 17, which are driven in the furnace body, substantially as described.

3. An electric furnace provided with an inclosed furnace chamber having the walls of a retaining hearth aifixed thereto, trunnions in respect to which said chamber is revoluble about a substantially horizontal axis and which are provided with passages or openings, means for revolving said body to interchange the roof and hearth, and elec-. trodes projecting axially into the furnace chamber, substantially as described.

4. An electric furnace comprising a furnace chamber having end walls and having an opening through its side wall. means for rotatably supporting the furnace chamber about a horizontal axis, means for revolving said body to interchange the roof and hearth, and electrodes projecting axially into the furnace chamber, substantially as described.

5. An electric furnace provided with an of a revoluble body comprising end Walls or inclosed furnace chamber having walls conheads and an intermediate casing connectstituting a retaining hearth affixed thereto, 1 ing said ends, stationary hubs extending I trunnions in respect to which said chamber Q through apertures in the ends of said body, 5 is revoluble about a horizontal axis and 1 and electrodes carried by said hubs and prowhich are provided with a passage or openjectinp; beyond the inner faces thereof.

ing, means for revolving said body to inter- In testimony whereof I have hereunto change the roof and hearth, electrodes pro- 1 signed my name.

jecting axially into the furnace chamber, CHARLES A. WEEKS. l0 and a condenser connected with said passage \Vitnesses:

or opening, substantially as described. CLIFFORD K. CAssEL,

6. In an electric furnace, the combination FRANK E. Fnnxcn. 

